Use multi-line info message support within jat_dump.sh

src/jat_dump.sh.skel

     local oorig=$4              # original file in case of HEXDUMP
     local bloat=""              # human description of limit excess; empty
                                 # .. means OK to dump to log; else use jat__submit()
-    local lline=""              # logged line
+    local llines=()             # logged lines
 
     oname="$(tr / - <<<"$oname")"
     bloat="$(__jat_dump__count "$opath")"
              && echo "=====NO_NEWLINE_AT_EOF====="
             echo  "=====END $otype $oname====="
         } \
-          | while IFS= read -r lline; do
-                $dmpfun "$lline"
-            done
+          | {
+                readarray -t llines
+                $dmpfun "${llines[@]}"
+            }
     else
         case $otype in
             FILE)